Linux

Here's an overview:

• SDDM crashed with some error about the theme: I haven't looked into it yet though. For the time being I disabled SDDM and reverted to console login and startx.

• All my kwin window rules stopped working. Apparently, the window title matching string now should include the window class (i.e. "urxvt URxvt" instead of just "urxvt"), so I had to redo all my window rules.

• ksysguard is gone, together with all my customized monitoring pages and its replacement plasma-systemmonitor is broken. It's complaining about missing sensors, and core dumps on some screens.

• Some of my custom keyboard shortcuts were not working anymore. Had to reconfigure them.

• Desktop overview is gone, replaced with something that has less functionality: I can move windows from the currently selected desktop to another one, but I can't drag windows between desktops.

• The Breeze theme now shows a very thick (and IMO ugly) outline by default. Thankfully you can tune or disable it in the settings.

• Floating taskbar by default is also not my thing, but easy enough to disable. New "edit mode" feels a bit janky though.

• When navigating between panes in System settings, it often shows the "apply settings" dialog even when no settings have been changed. Stop gaslighting me ksystemsettings, I know what I clicked.

• Resizing the window of some (but not all) applications now produces a kind of rubber banding effect: like the contents of the window get stretched and then snap back into place multiple times during the resize. It looks and feels really janky. It doesn't appear to affect QT and GTK applications, and Firefox isn't affected either. Applications that are affected: chrome/chromium, vscode, freetube, tigervnc, urxvt, xterm and all the x* utilties. Turning off compositing "fixes" it, but who wants to run a desktop without compositing nowadays?

• Screen locking is completely broken. When I press Meta+L, instead of simply showing me the lockscreen, the display turns off and starts to flicker on and off multiple times while showing just a black screen and a mouse cursor. After a while the lockscreen does appear, and I can type my password to unlock but instead of showing me my desktop it dumps me back to a black screen with a mouse cursor. After a while, if I'm lucky, the desktop reappears. One time my entire system froze and rebooted (!) before I got my desktop back, and I lost my unsaved work. I disabled automatic desktop locking for the time being, and am fighting against my muscle memory to press Meta+L whenever I leave my desk.

Especially the last two are bothering me.